Hi to all !
This is my first post.
I installed Knoppmyth a few months ago (I waited because I had problems to have a good signal) but am still struggling to make it work. In particular for DTV which is the main usage I want to do from my machine. Here is what lspci says:

My DVB-T card is a Hauppauge WinTV Nova-T that works fine. I tried it with Kubuntu (Kaffeine) and even managed to make it work on my Knoppmyth install with MPlayer or VLC (can't remember).I also managed to configure channels (I hope I did it well) by searching through frequencies. So MythTV seems to use my DVB-T card correctly, at least for this purpose. But when I start my computer and want to watch DTV, MythTV crashes. The messages end by the following:

If I load MythTV again with the mythfrontend command, it crashes the same way when I try to watch at DTV.But if I become super user or load MythTV with putting the messages in a file, I don't have the same behaviour. Then MythTV doesn't crash but I have a black screen for about ten seconds and then MythTV returns to the main page. Here is the mythbackend log after trying to watch at DTV:

Section "Module"# Comments: see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=346408 Load "dbe" # Double Buffering Extension, very important.# Load "dri" # This shouldn't be available choice if user has selected driver vga, vesa or nv. Load "glx" # GLX Extension. Load "freetype" # Freetype fonts. Load "type1" # Type 1 fonts Load "record" # Developer extension, usually not needed# Load "extmod" # This is okay, but if you look into "man xorg.conf" you'll find option NOT to include DGA extension with extmod, and for a good reason.. DGA causes instability as it access videoram without consulting X about it. SubSection "extmod" Option "omit xfree86-dga" EndSubSection# Load "speedo" # Speedo fonts, this module doesn't exist in Xorg 7.0.17# The following are deprecated/unstable/unneeded in Xorg 7.0# Load "ddc" # ddc probing of monitor, this should be never present, as it gets automatically loaded.# Load "GLcore" # This should be never present, as it gets automatically loaded.# Load "bitmap" # Should be never present, as it gets automatically loaded. This is a font module, and loading it in xorg.conf makes X try to load it twice.EndSection

This looks like a video card driver issue. It isn't DVB specific. You would probably get the same crash or black screen if you played a DVD.

A post in one of the other sections of the forum may get more attention, but you could try documenting the video card (or motherboard if inbuilt), the Xlog, and the video renderer (e.g. xv-blit, opengl, xlib, xshm).

I was eventually thinking the same way. My video card is inbuilt. I wanted to try DVB before buying a card with a TV-out. But I Have decided to buy a used one (a GeForce with XvMC support). In between, I'll try to change the video renderer.
Thank you for your reply and sorry not to have posted in the most appropriate section (it's not easy when you don't exacltly know where your problem comes from).

Edit: How do you change the video renderer for DTV?

_________________Member of the April (www.april.org)
Watch at your CPU usage and think to BOINC

I have managed to play a video (a record of DVB-T) successfully with the default settings. These settings don't work for viewing live TV. I can't try playing a DVD because I haven't installed a DVD player yet (I want to check if DTV works before).

_________________Member of the April (www.april.org)
Watch at your CPU usage and think to BOINC

OK. That's a start. Can I get you to look at what was being used to play back this file? (I can't remember if "internal" or mplayer/Xine is the default player). The easiest way is to press I (for Info) when it is playing. If a progress bar slides in from the bottom, it is internal. If there is some text that appears in the top right hand corner, it is mplayer. (cant remember what Xine does)

The only real difference between MythVideo using internal, and MythTV, is the OSD (on screen display) that usually pops up first thing in TV playback, so this eliminates the only thing I can think of that would be causing the glXGetProcAddress library error.

Thank you for your reply.
But I eventually uninstalled Knoppmyth and replaced it by Mythbuntu, which works great (except in the first seconds for DTV but my hardware is not good and I have to buy a real graphics card with XvMC support).
But your advice might help me if I return to Knoppmyth, that I still think being quicker. Also, using a new graphics chipset may help resolve the problem.

_________________Member of the April (www.april.org)
Watch at your CPU usage and think to BOINC

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